WHICH ARE THE MOST DENSELY POPULATED REGIONS IN THE WORLD? Why?
the regions most densely populated are in the northern hemisphere, where more than 90% of the world's population lives, the people also prefere the temperate zone, especially between 20º and 50º latitude north.In every countries, urban areas are usually much more densely populated than rural areas, because in the cities there are a lot of work and more social life.The people prefere the warm climate because of that there are more people in teh coast zones.

WHICH ARE THE MOST DENSELY POPULATED COUNTRIES? Is all territory densely populated.
the mos densely populated countries are China and India with a population about 2,500 million people, almos 40% of the world's population.In India the cities most densely populated are Kolkata, Delhi, Mumbai, Chennai, Myderabad, these are the zones warmest of the India, and the mostly of the cities are coast zones.
in china the most densely populated zones are Shangahai, Wuhart, Hong kong, Zaozhuang, Chongging, Chengdu, these cities are also in the coast zones